An extortion scam is being distributed that claims a Remote Access Trojan, or RAT, was installed on your computer using the EternalBlue exploit. The scammers then go on to say that they used the RAT to take videos of you on adult web sites and that you must pay a ransom or they will send it to all of your contacts. The reality is that this is just a scam and the senders have not utilized any exploits. Any passwords or email addresses listed in the email are simply from data breaches where your account info was publicly disclosed.
Source: https://www.bleepingcomputer.com/news/security/extortion-scam-claims-eternalblue-was-used-to-install-a-backdoor/